Modulation-valve.



-1.- L.F|Ts. MODULATION VALVE. APPLICATION FILED SEPT. 3. 1914.

Ptend Apr. 18, 1916.

lN'VENTOR fail. v vBY l sus UNITED STATES PATENT oEEicE.

JAMES L. FITTS, OF PENSAUKEN TOWNSHIP, OAMDEN CONTY, NEW JERSEY, ASSIGNOR TO WARREN WEBSTER c COMPANY,- A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

MonULATIoN-VALVE.

Application led September 3, 1914. Serial No..860,107.

To all whom t may concern:

r Be it known that I J AMES L. Fr'r'rs, a citil zen of the United tates, and resident of Pensauken township, county of Camden, and State of New Jersey, have inventedan Improvementv in Modulation-Valves, of which the following'is a specification.

This invention relates to valves and more particularly to modulation valves for u se in heating systems, and consists of certain improvements which are .fully set forth in the following specificationand shown in the accompanying drawings which form a part thereof.

The object of my invention is to provide a construction wherein the valve piece and the seat therefor are arranged to regulate and proportion the volume of heating medium passing through the valve in accordance with the existing conditions.

It has for a further object to provide a valve wherein the operating parts are not exposed to o r. in direct contact with the heating medium wherebyleakage to the outside ofthe valve cas is prevented and the necessity of packing or the valve stem or itsadJuncts is eliminated.

My invention also comprehends details of construction which, together with the features above specified, will be better understood by reference to the drawings, in which Figure l'represents a sectional elevation of a modulation valve embodying my invention; Fig. 2 represents a plan of` the same; Fig. 3 represents a detail showing the valve plug in side elevation; and Fig. 4 represents a modified form of valve plug.

1 designates the casing of the valve which is provided with an inlet 2 and an outlet 3, between which the casing, as here-shown, forms a fixed diaphragm or partition 4 prof. vided with an opening 5 for the valve plug 6. 'In the preferred embodiment of the invention, the opening 5 Iis-substantially circular in cross section and has its bounding walls straight with square edges as will be apparent.

designates a hanged portion of the-pliig 6 the periphery of which is provided with a plurality vof substantially V-shaped graduated notches 8 and since this'langed portion fits within and traverses the valve opening 5 theresulting action. isa regulated opening or closing' of the valve. The lower opening 5.

portion 9 of the valve plug in the preferred form is substantiallyl the shape of a frustum of. a cone, the diverging periphery of which 1s continued in the meeting edges 10 of the aforesaid V-notches 8. It will further be noted that the lower face 11 of the flanged part 7 is partially cutaway or in- `Cllned as shown at 12 so that not only is there a graduated opening of the valve plu due to its cone shape, but also a graduate opening. of the flanged portion as provided by the beveled portions 12.

The plug 6, in the present instance, is provided with a stem 13 having threaded engagement with the bushing 14 by which it is carried. This latter element has secured thereto, in any suitable manner, a ring 15 which is interposed between the valve plug and the said bushing but projects vlaterally at the sides of the plug 6 in order to form a seat for engagement with the partition 4 to provide for a complete closing ofA the The bushlng 14 in turn has threaded engagement. with an internal worm sleeve 16 carrled by the worm spindle 17,

and by which it receives the desired movement to operate the valve plug. The spindle 17 extends through the cap 18 of the casing and terminates in a stud 19'which secures the operating handle 20 in position upon the exterior of said cap.

It will be understood that the portion of the spindle 17 which passes through the cap 18 is cylindrical as shown at`21 so vthat it is free to rotate/and i also provided with a collar 22, adaptedto bear against the inner face of the cap to prevent lineal movement of the spindle 17 during its rotation. In the present instance ,the cap 18 serves to secure the laterally disposed nd ,portion 23 of a bellows member 24, the rpcsi'te end 25 of which is similarly clamp', 'd between the bushing 14 and the Sleeve 16. The bellows is preferably corrugated to permit free endwise expansion or contraction, and as' 'it forms a continuous encircling casing for the valve operating parts it becomes al leakproof medium which prevents steam or water from coming-into contact with the plug operating means or finding an escape by way of the joint between the rotatable spindle and the cap 18. "i

26 designates a dial plate or graduated disksuitably fixed to the cap 18 by the nut 27 and pin 28, or like means, and carrying Patented Apr. 18, 1916. v

pins or stop members 29 for the purpose of limiting the throw of the valve handle 20, it being further noted that an index pointer 30 is provided at one side of the handle and adapted to traverse the dial in a path which is limited by contact with the stops in the open and closed positions of the valve.

In Fig. 4. I have shown a modificatlon wherein a conical valve plug 31 is employed in .place of the flanged construction of the preferred form and by means of whichthe opening 5 may be controlled proportlonately as desired.

In the operation of the valve it will .be

seen that as the spindle 17 is rotated the sleeve 16 is moved lineally, thereby varying the relation between the valve piece and the opening controlled by it. Since the` member 24 is corrugated it is free to expand and contract under lthe motion of the sleeve thereby at all times forming a complete barrier or wall between the operating parts of the valve,piece and the contents of the casing. Furthermore a very exact proporltioning of the flow of the steam" or water through the casing is made possible by the conical valve piece with its lianged portion provided-with the beveled notches. In view L of the fact that the bounding walls of the opening-5 are substantially at right angles to the seat face of the partition, it will be apparent that a most effective seat is provided for coaction with the anged part of the valve piece and one which needs practically no attention or regrinding.

It will now be `apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable and while I have in the 'present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results,it is to be understood `that I do not restrict myself to the details, as the same are susceptible of modification in various particulars without departing from the spirit or scope of the invention.

Having now described my invention, what I claim as new and desire to protect by Letters Patent is 1 Ina device of the character' stated, a casing having an inlet and lan outlet, a par- .tition between said inlet and outlet having an opening therein, the bounding walls of said opening' being substantially at rightangles to a face of said partition, a valve piece comprising a anged member a portion of which is adapted to t within said opening and has a plurality of beveled notches in the periphery thereof and another -portion of conical shape extending from said flanged member, an annular clo-l sure adapted to seat upon said partition to entirely close said opening according to requirements, and-means to shift said valve an opening therein, a valve piece compris-r ing a flange partadapted for sliding movement within said opening and having a plurality of'beveledpnotches in the periphery thereof, and a conically shaped member at one side of said flange part adapted to enter said opening in advance of said flange part, an annular closure carried by said valve piece adapted to seat upon said partition to entirely close said opening according to requirements, a threaded sleeve connected to said valve piece, a spindle having threaded engagement with said sleeve and extending exterior of said casing, means to prevent longitudinal movement of said spindle, a handle for causing rotation ,of said spindle to` shift said sleeve, valve piece and closure toward or away 'from said opening, and means inclosing said sleeve to separate its 'parts from the contents of said ca sing.

v3. In a device of the character. stated, a casing having an inlet and an outlet, a partition between said inlet and outlet having an opening therein a valve piece adapted for sliding movement within said opening and comprising 4a conically shaped member, an annular closure carried by said valve piece adapted to seat upon saidA partitionto entirely close said opening according to requirements, a threaded sleeve connected to said valve piece, an apertured valve piece, said bellows member forming a leak-proof expansible wall, between said `sleeve and the medium controlled by `said valve piece, av spindle having threadedjengagement with said sleeve and extending through the aperture of .said cap, a ldial plate fixed against rotation upon said cap, a nut having threaded engagement with a portion of said cap forclamping said dial plate in operative position, a collar secured to saidv spindle and abutting the inner face of said cap, andan voperating handle provided with an index pointer secured to the projecting end ofl said spindle and arrangedtoabut said cap tod prevent axial movement of' said spindle, and means to limit the rotation or' movement of said handle. i

4. In a device of the characterA stated, 't casing having an inlet and an outlet, a partition between ysaid 'inlet and said outlet having an opening therein, a valve piece 'having-a truncated conical portion provided with a flange part encircling a portion of said truncated conical portion said ange part having a plurality of beveled notches formed in the periphery thereof, the meeting edge of the walls of the respective notches lying in the surface of the truncated conical portion, an annular closure seated upon said ange part and adapted to entirely close said -partition opening in one' position, operating means for said valve piece and closure extendin exterior of said casing, and a bellows fol member surrounding a portion of said operating means within said casing to form a leak-proof expansible` wall completely separating the operating means from the mediumvcontrolled by said valve piece.

5. In a device of the character stated, a

- casing having an inlet and an. outlet 'and apartition between said inlet and outlet having an opening therethrough, combined with a valve having a lower conical part of less diameter than said opening, an upper ange of greater diameter than the opening through the partition, and an intermediate flange of the same diameter as vdepth so that their innermost wall portions are substantially continuous with the vconical walls, and means for operating the valve piece.

In testimony of which invention, I hereuntoset my hand.

Y JAMES L. FITTS.

Witnesses: PHILIP Y. QUIN'N, JACOB M. NoLL. 

